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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 141 · 40 sums
TalentJR

The method (Count on): Start with the bigger number. Count on the smaller number, one finger at a time. For a missing number (8 + ? = 15), count on from 8 up to 15, or take away: 15 − 8.

NameDateTime takenScore ___ / 40
  1. 1.Arjun has 5 bananas and gets 7 bananas more. How many bananas does Arjun have now?
  2. 2.Karan has 15 laddoos and gets 4 laddoos more. How many laddoos does Karan have now?
  3. 3.2 + 15 =
  4. 4.Manav has 11 bananas and gets 1 banana more. How many bananas does Manav have now?
  5. 5.19 + 1 =
  6. 6.There are 5 blue balloons and 13 red balloons. How many balloons are there in all?
  7. 7.13 + 6 =
  8. 8.There are 6 pink balloons and 3 green balloons. How many balloons are there in all?
  9. 9.Joseph has 4 mangoes and gets 5 mangoes more. How many mangoes does Joseph have now?
  10. 10.7 + ? = 19
  11. 11.8 + ? = 13
  12. 12.Ishaan has 7 flowers and gets 9 flowers more. How many flowers does Ishaan have now?
  13. 13.1 + ? = 7
  14. 14.4 + 2 + 13 =
  15. 15.4 + 2 =
  16. 16.There are 4 yellow balloons and 14 blue balloons. How many balloons are there in all?
  17. 17.17 + 3 =
  18. 18.? + 2 = 12
  19. 19.There are 5 yellow balls and 3 green balls. How many balls are there in all?
  20. 20.Kabir has 3 pencils and gets 15 pencils more. How many pencils does Kabir have now?
  21. 21.Ananya has 12 balloons and gets 6 balloons more. How many balloons does Ananya have now?
  22. 22.There are 11 white beads and 2 pink beads. How many beads are there in all?
  23. 23.There are 4 yellow flowers and 3 green flowers. How many flowers are there in all?
  24. 24.7 + 1 + 9 =
  25. 25.2 + ? = 11
  26. 26.3 + 7 + 2 =
  27. 27.? + 2 = 6
  28. 28.3 + ? = 20
  29. 29.There are 2 pink balloons and 12 blue balloons. How many balloons are there in all?
  30. 30.Lakshmi has 6 marbles and gets 3 marbles more. How many marbles does Lakshmi have now?
  31. 31.There are 11 green flowers and 2 red flowers. How many flowers are there in all?
  32. 32.? + 5 = 10
  33. 33.4 + 4 =
  34. 34.9 + ? = 13
  35. 35.? + 12 = 15
  36. 36.There are 4 white balls and 2 yellow balls. How many balls are there in all?
  37. 37.10 + ? = 14
  38. 38.Tara has 2 shells and gets 4 shells more. How many shells does Tara have now?
  39. 39.8 + 8 + 1 =
  40. 40.? + 1 = 16

Answer key

  1. 12
  2. 19
  3. 17
  4. 12
  5. 20
  6. 18
  7. 19
  8. 9
  9. 9
  10. 12
  11. 5
  12. 16
  13. 6
  14. 19
  15. 6
  16. 18
  17. 20
  18. 10
  19. 8
  20. 18
  21. 18
  22. 13
  23. 7
  24. 17
  25. 9
  26. 12
  27. 4
  28. 17
  29. 14
  30. 9
  31. 13
  32. 5
  33. 8
  34. 4
  35. 3
  36. 6
  37. 4
  38. 6
  39. 17
  40. 15

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